A股小米汽车概念多数高开，凯众股份、无锡振华竞价涨停，海泰科涨超14%，宁波华翔、浙江世宝等跟涨。

Group 1 - The majority of Xiaomi automotive concept stocks in the A-share market opened higher, indicating positive market sentiment towards the sector [1] - Companies such as Kaizhong Co., Wuxi Zhenhua, and others reached their daily price limit, showcasing strong investor interest [1] - Haitai Technology saw an increase of over 14%, reflecting significant upward movement in its stock price [1] Group 2 - Other companies like Ningbo Huaxiang and Zhejiang Sebao also experienced gains, suggesting a broader trend of rising stock prices within the automotive concept sector [1]